I think the tension is smaller than you think. Drinker is totally fine as Savanna Lion should you have winter orb in play. Iím curious how Goose turn out. This is what iíve run:

Deck: Legacy Delver Noble RUG

Counts : 60 main / 15 sideboard

Creatures:12
4 Delver of Secrets
2 Hexdrinker
4 Noble Hierarch
1 Brazen Borrower // Petty Theft
1 Hooting Mandrills

Spells:30
4 Brainstorm
1 Chain Lightning
4 Lightning Bolt
4 Ponder
2 Spell Pierce
2 Spell Snare
4 Daze
1 Sylvan Library
1 Winter Orb
1 Force of Negation
2 Oko, Thief of Crowns
4 Force of Will

Lands:18
4 Flooded Strand
4 Misty Rainforest
3 Tropical Island
3 Volcanic Island
4 Wasteland

Sideboard:15
1 Brazen Borrower // Petty Theft
2 Blazing Volley
2 Grafdigger's Cage
3 Pyroblast
2 Surgical Extraction
1 Veil of Summer
2 Abrade
1 Null Rod
1 Winter Orb